Invalidate
Instant (R)
Invalidate costs less to cast if it targets an artifact, less to cast if it targets an enchantment, less to cast if it targets a creature, and less to cast if it targets a land.
Exile target permanent.
Gone... and forgotten.



This is the card that inspired my design. I wanted to make a card that reduced each color for meeting a specific condition, but in the process, decided on this 4-color variant of a universal removal spell instead. Years ago, possibly on the motherboards, someone posted a cool card I still remember: an enchantment that gave all your 1/1s a benefit, all your Saprolings (I think, could have been another type) a benefit, and all of your green creatures a benefit, the idea being that 1/1 green Saprolings got all the benefits while your other critters only got some. It makes for neat limited card, where assembling the perfect specimens isn't always easy. Anyway, my card isn't anything like that, but that's where my mind went. I opted to leave planeswalkers out of the equation since they never share types with other permanents, and blue out of the equation because it sucks at permanent removal. Cheers!

Gonna try to complete the cycle.

Specimization
Sorcery (R)
Specimization costs less to cast if it targets a creature that entered this turn, costs less to cast if it targets a creature that untapped this turn, costs less to cast if it targets a creature that tapped this turn, and costs less to cast if it targets a creature that attacked this turn.
Create a token copy of target creature.
"Ah! The perfect subject!"

Again
Sorcery (R)
Again costs less to cast if it targets a card with mana value 3 or less, less to cast if your graveyard contains three or fewer cards, less to cast if it targets a card with power 3 or less, and less to cast if it targets a card with toughness 3 or less.
Return target creature card from your graveyard to the battlefield.
"... with feeling!"

Taken
Sorcery (R)
Taken costs less to cast if it targets a summoning sick creature, less to cast if it targets a creature you own, less to cast if it targets a token creature, and less to cast if it targets the only creature on the battlefield.
Gain control of target creature.
"I will find you."

I think these should all be cards of the week.

Multiply
Instant (R)
Multiply costs less to cast if it targets a spell cast without paying mana, less to cast if it targets a spell you control, less to cast if it targets a copy of a spell, and less to cast if it's not your turn.
Copy target spell.
"More!"



And... finished!